[Troubleshooting] Failed to retrieve schema - Event ID 6331 - A update on the configuration of a MA or MV failed to replicate: http://social.technet.microsoft.com/wiki/contents/articles/18544.troubleshooting-failed-to-retrieve-schema-and-event-id-6331...

[REFERENCE] How to flow msExchHideFromAddressList but filter if the value is true: http://social.technet.microsoft.com/wiki/contents/articles/17707.reference-how-to-flow-msexchhidefromaddresslist-but-filter-if-the-value-is-true.aspx